题目内容：

 

 

What happened to schools in England in the 1970’s	Many schools became    1..
Why do girls do better at single-sex schools?	They learn to be    2.and less worried about their appearance.
Why do boy’s parents prefer to send their kids to mixed schools?	They think girls will be    3.on boys.
In what aspect do girls perform better than boys?	In    4..